Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2025EXPRESS 2500 LS, 6.6L ENG VIN 7REPAIR AND DIAGNOSISQUICK LOOKUPSFLUIDS
2025 Chevrolet Express 2500 LS, 6.6L Eng VIN 7
Quick Lookups: Fluids
2025 Chevrolet Express 2500 LS, 6.6L Eng VIN 7SECTION Fluids
| FLUID CAPACITIES | |||||||
|---|---|---|---|---|---|---|---|
| Fluid Type | Application | Standard | Metric | Fluid Spec | Note | S/H | |
| Air Cond Compressor Oil | w/o Rear AC | 8.00 OZS. | 0.23 L | PAG 46 | S | ||
| Air Cond Compressor Oil | w/Rear A/C | 11.00 OZS. | 0.32 L | PAG 46 | S | ||
| Air Cond Refrigerant | Front | 1.79 LBS. | 0.81 KG | R-134a | S | ||
| Air Cond Refrigerant | w/Rear A/C,LWB | 3.21 LBS. | 1.45 KG | R-134a | S | ||
| Air Cond Refrigerant | w/Rear A/C,SWB | 3.10 LBS. | 1.4 KG | R-134a | S | ||
| Automatic Transmission Fluid | Complete Trans System (Heavy Duty Cooling) | 11.41 QTS. | 10.79 L | Automatic Transmission Fluid DEXRON HP | Approximate capacity. | S | |
| Automatic Transmission Fluid | Overhaul | 10.88 QTS. | 10.29 L | Automatic Transmission Fluid DEXRON HP | Approximate capacity. | S | |
| Automatic Transmission Fluid | Pan Removal and Filter Replacement | 7.40 QTS. | 7 L | Automatic Transmission Fluid DEXRON HP | Approximate capacity. | S | |
| Brake Fluid | N/A | N/A | DOT 4 Hydraulic Brake Fluid | S | |||
| Differential Gear Oil | Rear Axle 10.5" | 2.75 QTS. | 2.6 L | SAE 75W-90 | Rear Locking Differential Clutch (friction disc) Disc (10.5 Inch Axle). 88900401 or equivalent meeting GM Specification 9986115. | S | |
| Differential Gear Oil | Rear Axle 9.5" | 2.59 QTS. | 2.45 L | SAE 75W-85 Synthetic Gear Oil | Rear Locking Differential Clutch (friction disc) Disc (9.5 Inch Axle). 19300457 or equivalent meeting GM Specification 9986375. | S | |
| Engine Coolant | 6.6L Eng | w/C69 | 14.10 QTS. | 13.34 L | 50/50 mixture of DEX-COOL and clean, drinkable water | All capacities are approximate. When adding, be sure to fill to the approximate level. Recheck the fluid level after filling. | S |
| Engine Coolant | 6.6L Eng | w/o C69 | 11.60 QTS. | 10.97 L | 50/50 mixture of DEX-COOL and clean, drinkable water | All capacities are approximate. When adding, be sure to fill to the approximate level. Recheck the fluid level after filling. | S |
| Engine Oil | 6.6L Eng | w/Filter | 8.00 QTS. | 7.57 L | API - SAE 5W-30 | DEXOS1 Gen3 Full synthetic engine oil. Cold Temperature Operation: In an area of extreme cold, where the temperature falls below -29Deg. C (-20Deg. F), an SAE 0W-30 oil should be used. An oil of this viscosity grade will provide easier cold starting for the engine at extremely low temperatures. When selecting an oil of the appropriate viscosity grade, be sure to always select an oil that meets the required specification, dexos. | S |
| Engine Oil | 6.6L Eng | w/o Filter | 7.50 QTS. | 7.09 L | API - SAE 5W-30 | DEXOS1 Gen3 Full synthetic engine oil. Cold Temperature Operation: In an area of extreme cold, where the temperature falls below -29Deg. C (-20Deg. F), an SAE 0W-30 oil should be used. An oil of this viscosity grade will provide easier cold starting for the engine at extremely low temperatures. When selecting an oil of the appropriate viscosity grade, be sure to always select an oil that meets the required specification, dexos. | S |
| Fuel Tank | Optional Tank | 57.00 GALS. | 215.76 L | S | |||
| Power Steering Fluid | 2.32 PTS. | 1.09 L | S | ||||
| Windshield Washer Fluid | N/A | N/A | Windshield Washer Fluid | Follow the Manufacturer's Instructions for the mixture ratio. Automotive windshield washer fluid that meets regional freeze protection requirements. | S | ||
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.